5th Annual Inkaba ye Africa Workshop, 22-26 October 2007
J. Lippmann-Pipke 1,2, J. Erzinger 1, M. Zimmer 1, Chr. Kujawa 1, E. Van Heerden 3, D. Litthauer 3, A. Bester3, S. Niedermann1, M.
Boettcher4, H. Moller5, V. Heesakkers6, Z. Reches61GFZ Potsdam, Germany, 2IIF Leipzig, Germany, 3University of the Free State, SA,
4USGS Menlo Park, USA, 5TauTona Gold Mine, SA, 6Oklahoma University, USA
Striking correlation between geogas data and mininginduced seismicity in the World‘s deepest gas lab,
TauTona Gold Mine, SA
5th Annual Inkaba ye Africa Workshop, 22-26 October 2007
Aims of the project:
Monitoring of seismically released gases such as N2, CO2, CH4, Ar, H2, He, and 222Rn!
Correlation of type and magnitude of seismic events with the amountand composition of released gases!
What is the time function between seismic events and gas signals?
Monitoring of mining induced gas release!
Fluxes, origin and age(?) of fluids and gases!To what extend is the noble gas dating of crustal fluids distored in
active fault zones?
What is the influence of CH4 and H2 on microbiological activity?
Sampling of gases for C, H and noble gas isotope studies!
5th Annual Inkaba ye Africa Workshop, 22-26 October 2007
cabby (5m x 5m)
TauTona, main tunnel, level 120-118
40m long borehole, 75mm
Pretoriusfault
tubes
box (1,7 x0,8 x0,7)m³
multiport valve
Set-up for real-time gas monitoring at 3600 m depth in TauTona gold mine
↑↑↑↑40m
↑↑↑↑20m
↑↑↑↑30m
p&T p&T p&T
QMS for N2, CO2, CH4, Ar, H2, and He; αααα-detector for 222Rn; gas sampler
5th Annual Inkaba ye Africa Workshop, 22-26 October 2007
5th Annual Inkaba ye Africa Workshop, 22-26 October 2007
H2
CO2
Mon Tue Wen Thu Fri Sat Sun
5th Annual Inkaba ye Africa Workshop, 22-26 October 2007
5th Annual Inkaba ye Africa Workshop, 22-26 October 2007
1120
1125
1130
1135
1140
1145
1150
1155
39167 39168 39169 39170 39171 39172 39173 39174
Air pressure
5th Annual Inkaba ye Africa Workshop, 22-26 October 2007
5th Annual Inkaba ye Africa Workshop, 22-26 October 2007
Hydrogen and mining induced seismicity